Signaling device



L. MUIR.

SIGNALING DEVICE.

APPLICATION FILED OCT. 3|. 1917. RENEWED SEPT.6. 1919.

Patented Oct. 28,1919.

r-Lmoummi c l. WASHINGTON, r) c THE mumnu LEVI MUIR, or SALT AKE CITY,

UTAH; ASSIGNOR 0F ONEHALF TO FLOYD CARROLL ,STANNARD, or SALT LAKE orrY, Ur

SIGNALING DEVICE;

Specification of Letters Patent.

Patented Oct. 28, 1919.

Application filed October 31, 1917, Serial No. 199,562. Renewed September 6, 1919. Serial No. 322,233.

To all whom it may concern:

.Be it known that 1,;LEVI Minn, a citizen ofthe United States, residing at Salt Lake City, in the county of Salt Lake and State of Utalnhave invented certain new and useful Improvements in Signaling Devices, of which the following is a specification.

This invention relates to signaling devices and more particularly to that class of signaling devices which have for their object the sounding of an alarm upon the completion of a predetermined number of revolutions of a revolving object such as a mixing drum for mixing concrete or the like. I will proceed to describe the device as applied to the mixing drum of a concrete mixer, though as will. be apparent it may be used for many otherpurposes.

Mydevice is absolutely automatic or self setting and will not continue to register or operate after the predetermined number of revolutions of the mixing drum have been obtained, and will therefore be properly set ceeding number of revolutions of the drum or other object, a defect which not only entails the trouble and time required to reset it but leads to confusion and mistakes in the number of revolutions obtained, while in my device the operative mechanism for sounding the alarm will be thrown out of operative relation when the predetermined number of revolutions of the mixing drum have been obtained.

For a more comprehensive understanding of the device, reference may be had to the accompanying drawings in which Figure l is a side elevation of my device with a portion thereof broken away,

Fig. 11 is a transverse section thereof taken on line 2--2, Fig. I.

Like reference numerals are used to in= dicate like parts of the device throughout the drawings in which V 1 indicates a supporting frame for properly supporting the device in its proper relation to a mixing drum 2 which drum carries on the periphery thereof a cam 3 which cam is adapted to raise the lever 4: which is pivotally mounted upon the frame as at 5 to the position shown in dotted lines upon each revolution, of the drum and to in turn drop the said lever to the position shown. in full lines thereby throwing dog 6 carried by lever 4 into engagement with one of the teeth 7 of the ratchet wheel 8 upon each elevation of the lever 41: thereby causing the ratchet wheel 8 to turn upon pinion 9 the distance between the, teeth of the ratchet wheel by the weight of the lever st to the face of the drum Qafter thepassing of the cam from under the lever. A stud-10 is carried by ratchet wheel. 8 which is adapted to engage the bent end 11 of link 12 upon each revolution of the ratchet wheel 8 there by drawing the link away from gong 13 and causing the gong to be sounded by any suitable sounding mechanism, as for instance, by pulling the hammer of the gong against the tension of a spring and releasing it at the extremity of the movement of the link away from the gong. 1a is a finger carried by dog (3 which is adapted to be engaged by stud 1 0 and be pushed outwardly from ratchet wheel 8 thereby disengaging dog 6 from the teeth 7 of the ratchet wheel 8 and rendering inoperative the device after the predetermined number of revolutions of the drum 2 have been obtained and the gong 18 sounded. When it is desired to again place the recording mechanism in operation, lever 41: is raised until finger 1 1 clears stud 10 and is then lowered bringing dog 6 into engagement with teeth 7 and stud 10' between finger 14 and dog 6 when the device will again he in operative position for recording a predetermined number of revolutions of the drum. 15 is a dog held in engagement with teeth 7 by means of spring 16 to prevent the ratchet wheel 8 from slipping backward under the tension of link 12.

It will be seen that the gong can be made to sound upon any number of revolutions that may be desired by supplying the ratchet wheel with the proper number of teeth, as each revolution of the drum revolves the ratchet wheel the distance between two L.

teeth, for example, if it is desired to sound the alarm upon the completion of the six.- teenth revolution of the drum, the wheel should be supplied with eighteen teeth, the gong sounding upon the dogs passing from the sixteenth tooth and the seventeenth and eighteenth tooth being for the purpose of bringing the stud 10 into engagement with finger 14: and forcing dog 6'out of engagement with teeth 7.

I'claim:- Y

1. In an alarm sounding device, a supporting frame, a. horizontal lever pivotally mounted thereon, a ratchet wheel carried by said frame, a dog carried by said lever and adapted to revolve said wheel by the weight of said lever. v

2. .In an alarm sounding device, a supporting frame, a horizontal lever pivotally mounted upon said frame, a ratchet wheel carried by said frame, a dog carried by said lever and adapted to revolve said wheel by the weight of said lever, a horizontally disposed link carried by said frameand adapted to be moved on a horizontal plane by said wheel.

3. In an alarm sounding device, a supporting frame, a horizontal lever pivotally mounted upon said frame, a ratchet wheel carried by said frame, a dog carried by said i lever and adapted to revolve said wheel the distance between two teeth thereof by the weight of said lever upon its downward movement, a horizontally disposed link carried by said frame and means carried by said wheel for moving said link on a horizontal plane. a

4. In an alarm sounding device, a supporting frame, a horizontal lever pivotally mounted on said frame, a ratchet wheel carried bysaid frame, a dog carried by said lever and adapted to revolve said wheel by the weight of said lever and means carried by said ratchet wheel for automatically dis- Copies of this patent may be obtalnedfor engaging said dog therefrom at a predetermined point in the revolution of said wheel.

5. In an alarm sounding device, a supporting frame, a horizontal lever pivotally mounted thereon and adapted to have reciprocal vertical motion at one end thereof, a dog carried by said lever intermediate the ends thereof and depending therefrom, said dog being adapted to engage the teeth of 7 said ratchet wheel and revolve said wheel by the weight of saidilever, a gong carried by said frame, a link so related'to said gong and said wheel as to be drawn away from said gong-by the revolution of said wheel.

6. In an alarm sounding device, a supporting frame, a horizontal, lever pivotally mounted on said frame,a dependent dog carried by said lever intermediate the ends thereof and adapted to revolve said wheel by engaging the teeth thereof and means carried by said wheel for disengaging said dog 'at a given point. in the revolution of .said wheel.

7. In an alarm sounding device, a supporting' frame, a horizontal lever 'pivotally mounted upon said frame, a ratchet wheel carried by'said frame, a dependent dog carried by said lever intermediate its ends and adapted to engage and revolve said wheel and means carried by saidwheel for automatically rendering the mechanism of the device inoperative at a predetermined point in the revolution of said wheel. .7

8. In an alarm sounding device, a supporting frame, a horizontal leverpivotally mounted on said frame, a ratchet wheel carried by said frame, a dependent dog mounted intermediate the ends of'said lever andadapted to engage and revolve said wheel through the. gravitation of said lever andmeans carried b said frame for locking said wheel against reverse movement.

In testimony whereof I afiix my signature.

I 1 LEVI MUIR.

five cents eaeh by addressing the Commissioner of Patents, 'Washington, I). G. a 

